Boltwork mechanism for safe and vault doors.



.PATENTED NOV. 5, 1907. E. A. STRAUSS. BOLTWORK MECHANISM FOR SAPHANDVAULT DOORS.-

1 APPLICATION FILED APB.22, 1907.

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EMIL A. STRAUSS, OF CHICAGO, ILLINOIS.

BOLTWORK MECHANISM FOR SAFE AND VAULT DOORS.

Specification of Letters Patent.

Patented Nov. 5, 1907.

Application filed April 22. 1907- Serial No. 369,472.

To all whom it may concern:

Be it known that I, EMIL A. STRAUSS, a citizen of the United States,residing in Chicago, Cook county, Illnois, have invented certain new anduseful improvements in boltwork mechanism for safe and vault doors andlike devices and means for retaining said bolts in their lockedposition; and I hereby declare the following to be a full and correctspecification thereof, reference being had to the hereto accompanyingdrawing, forming a part hereof, and in which Figure 1 shows aconstruction of my said device in elevation as seen on the inside of acircular door, though applicable to any form of door. Fig. 2 shows ahorizontal section taken on the plane as at cutting parts and leavingthe pitman-rods and minor other parts entire, and readily understoodfrom the drawings.

Like reference letters denote like parts throughout.

My said new construction is made, substantially, as follows, namely: Ona fixed ring I) rides and turns a mastel gearwheel a provided on itsexternal and entire circumference with gear teeth a, and a series ofslots a in which play studs 0 provided with anti-friction rings d, saidslots a having, in this specific construction, a length equal to halfthe circumference of the gear-wheels, or pinions, e. To each of saidpinions is attached, fixedly, an eccentric c which is embraced by theinner end of a pitman-rod f having its other end held to the lockingbolt9 by a pin f. Said pinions e turn on studs 6- and are actuated by meansof a rack-bar h which receives its motion from gear-wheel i on a shaftt" passing to the outside of the door, and where it is provided with anysuitable actuating device, as a hand-lever 1 I Said gear-wheel i islengthened so as to engage the rack j 011 one edge of the rack-bar h,and on the opposite edge and opposite end of said rack-bar is a rack iswhich engages with a pinion e which is also made longer, as shown, so asto reach said rack-bar, and the object of said rackbar is simply for thepurpose of reducing friction and easing the action of the mechanism inmoving said master-wheel a with its many bolts 9, one to every fifteendegrees of the circle, as shown in this case. The said mechanism could,however, be actuated directly from the wheel '5 which also meshes withthe pinion e next to it, as clearly seen on the right hand end of bothdrawings, or, from any one of said gear-wheels e.

The master-wheel a engages with every pinion e of the series and as eachpinion e turns and carries the eccentric e with it the bolt g is shotoutward until the half revolution of the wheel a is completed and bythat time the motion of the rack-bar exhausted, thus causing each boltto be held on the dead center of its said actuating mechanism, which isan important point in the position of such locking mechanism because noforce applied to such bolt can give any motion to said mechanism,

What I claim is:

1 The combination with reciprocable locking-bolts and pitman-rodsconnected thereto, of a rotatable gear-wheel, pinions to engage saidwheel, and means to reciprocably connect said pinions and pitman-rods.

2. The combination with reciprocable locking-bolts and pitman rodsconnected thereto, of a master gear-wheel and geai wheels and means torotate said wheels and to actuate said bolts.

3. The combination with a master gear-wheel, pinions engaging therewith,pitman-rods connected to said pinions and means to actuate said parts,of reciprocable bolts connected to said rods.

4. The combination with a master gear-wheel, pinions engaging therewith,pitman rods connected to said pinions, and means to actuate said rodsand to hold them at the dead center, of reciprocable bolts connected tosaid rods.

5. The combination with reciprocable locking-bolts, of a mastergear-wheel, pinions engaging therewith, eccentrics thereon and means toreciprocably connect said bolts and eccentrics.

6. Thecombination with 1ocking-bolts and a reciprocable rack, of pinionseccentrics secured to said pinions pitman-rods to connect said bolts andeccentrics, and means to reciprocate said rack.

EMIL A. STRAUSS.

Witnesses WM. ZIMMERMAN, F. S. GRAHAM.

